That's mostly right. While it is possibly to remove the COD files for the browser, the problem is how integrated the browser is into the OS. You'd be doing more harm than good. Plus you still need the BB Browser in order to download any app OTA.

to give u a clear answer if you remove the cod files for the browser you will end with a sexy reload os screen or a jvm error, browser is a part of the core applications meaning that it is needed on the os to make the phone functional...